The hymns were collected in Sweden, Estonia and the Ukraine. Many of the ballads were preserved without melodies and Ulv has shaped new ones from medieval motives and other existing folk tunes.

The Swedish medieval ballads have roots in both Icelandic mythology and the European ballad tradition. Many ballad texts have been documented without melodies and Ulv has shaped new melodies from medieval motives and other existing Swedish folk tunes that fit the surviving texts.

The Swedish folk hymns were sung both in church and at home. Some organists held the final tone of the hymn phrases so the singers could finish their own ornamented versions. At home, the hymns could be sung and ornamented without additional harmonies.”